Table 7.
Parameter estimates of the best model based on AICF for the study data.
| Covariate | HR | SE | 95% CI | p (LR) | |
|---|---|---|---|---|---|
| ntumor | |||||
| 1 vs. 2–4 | 0.71 | 0.19 | 0.49 | 1.05 | 0.08 |
| 5–10 vs. 2–4 | 1.57 | 0.21 | 1.03 | 2.38 | 0.04 |
| ptumor | |||||
| Breast vs. lung | 0.94 | 0.26 | 0.57 | 1.57 | 0.82 |
| GI vs. lung | 1.60 | 0.36 | 0.79 | 3.26 | 0.21 |
| Renal cell vs. lung | 0.12 | 1.43 | 0.01 | 1.99 | 0.02 |
| Others vs. lung | 0.87 | 0.55 | 0.30 | 2.56 | 0.79 |
| neuro (yes vs. no) | 1.53 | 0.20 | 1.04 | 2.24 | 0.04 |
Note: HR, hazard ratio; ntumor, number of tumors; ptumor, primary tumor category; neuro, neurological symptoms; GI, gastrointestinal; LR, likelihood ratio; SE, standard error.